package com.twelvet.framework.utils;

import com.twelvet.framework.utils.exception.TWTUtilsException;
import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.util.Date;

/**
 * @author twelvet
 * @WebSite twelvet.cn
 * @Description: 时间格式工具
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

	public DateUtils() {
		throw new TWTUtilsException("This is a utility class and cannot be instantiated");
	}

	public static String YYYY = "yyyy";

	public static String YYYY_MM = "yyyy-MM";

	public static String YYYY_MM_DD = "yyyy-MM-dd";

	public static String PATH_YYYY_MM_DD = "yyyy/MM/dd";

	public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

	public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

	private static String[] parsePatterns = { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
			"yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM", "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss",
			"yyyy.MM.dd HH:mm", "yyyy.MM" };

	/**
	 * 获取当前Date型日期
	 * @return Date() 当前日期
	 */
	public static Date getNowDate() {
		return new Date();
	}

	/**
	 * 获取当前日期, 默认格式为yyyy-MM-dd
	 * @return String
	 */
	public static String getDate() {
		return dateTimeNow(YYYY_MM_DD);
	}

	public static String getTime() {
		return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
	}

	public static String dateTimeNow() {
		return dateTimeNow(YYYYMMDDHHMMSS);
	}

	public static String dateTimeNow(final String format) {
		return parseDateToStr(format, new Date());
	}

	public static String dateTime(final Date date) {
		return parseDateToStr(YYYY_MM_DD, date);
	}

	public static String parseDateToStr(final String format, final Date date) {
		return new SimpleDateFormat(format).format(date);
	}

	public static Date dateTime(final String format, final String ts) {
		try {
			return new SimpleDateFormat(format).parse(ts);
		}
		catch (ParseException e) {
			throw new RuntimeException(e);
		}
	}

	/**
	 * 日期路径 即年/月/日 如2018-08-08
	 */
	public static String datePath() {
		Date now = new Date();
		return DateFormatUtils.format(now, PATH_YYYY_MM_DD);
	}

	/**
	 * 日期路径 即年/月/日 如20180808
	 */
	public static String dateTime() {
		Date now = new Date();
		return DateFormatUtils.format(now, "yyyyMMdd");
	}

	/**
	 * 日期型字符串转化为日期 格式
	 */
	public static Date parseDate(Object str) {
		if (str == null) {
			return null;
		}
		try {
			return parseDate(str.toString(), parsePatterns);
		}
		catch (ParseException e) {
			return null;
		}
	}

	/**
	 * 增加 LocalDateTime ==> Date
	 */
	public static Date toDate(LocalDateTime temporalAccessor) {
		ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
		return Date.from(zdt.toInstant());
	}

	/**
	 * 增加 LocalDate ==> Date
	 */
	public static Date toDate(LocalDate temporalAccessor) {
		LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
		return toDate(localDateTime);
	}

	/**
	 * 获取服务器启动时间
	 */
	public static Date getServerStartDate() {
		long time = ManagementFactory.getRuntimeMXBean().getStartTime();
		return new Date(time);
	}

	/**
	 * 计算两个时间差
	 */
	public static String getDatePoor(Date endDate, Date nowDate) {
		long nd = 1000 * 24 * 60 * 60;
		long nh = 1000 * 60 * 60;
		long nm = 1000 * 60;
		// long ns = 1000;
		// 获得两个时间的毫秒时间差异
		long diff = endDate.getTime() - nowDate.getTime();
		// 计算差多少天
		long day = diff / nd;
		// 计算差多少小时
		long hour = diff % nd / nh;
		// 计算差多少分钟
		long min = diff % nd % nh / nm;
		// 计算差多少秒//输出结果
		// long sec = diff % nd % nh % nm / ns;
		return day + "天" + hour + "小时" + min + "分钟";
	}

}
